Hey, 2013/12/16 Martin Grimme <martin.gri...@gmail.com>: > 2013/12/16, W. Dobbe <winfried.do...@xmsnet.nl>: >> Probably that will be the end conclusion, but Android is also Linux, so how >> do the Android network monitor apps get their information? Does the android >> stack/Dalvik give extra hooks for network inspection ? > > Android is not Linux. Android is as much Linux as iOS is BSD. > Android runs on top of a Linux kernel, but that's all Android and > GNU/Linux have in common. > Network inspection is probably exposed by the Android Java API.
In Android, every application has its own UID, so the "bandwidth per app" problem can be reduced to "bandwidth per user" in that case. If you look around the Android sources, there's a way to access these stats: https://github.com/CyanogenMod/android_frameworks_base/blob/cm-10.2/core/java/android/net/NetworkStats.java And this is how the stats are collected: https://github.com/CyanogenMod/android_frameworks_base/blob/cm-10.2/services/java/com/android/server/net/NetworkStatsCollection.java https://github.com/CyanogenMod/android_frameworks_base/blob/cm-10.2/services/java/com/android/server/net/NetworkStatsRecorder.java https://github.com/CyanogenMod/android_frameworks_base/blob/cm-10.2/services/java/com/android/server/net/NetworkStatsService.java With that said, it's definitely possible with some motivation to do per-process bandwidth tracking, we did something like this for a Uni course some years ago: http://thp.io/2010/bwmon/ This uses the "ip_conntrack" kernel module or - with more recent kernels - conntrack-tools: http://conntrack-tools.netfilter.org/ There's even some documentation on how to use the bwmon utility: http://thp.io/2010/bwmon/manual.html If you plan on using that for the mobile device use case, think about rewriting the thing in C/C++ instead of Python and make it less resource-hungry by reducing wake-ups. As Harbour apps are now prefixed with "harbour-" and have strict requirements for .desktop and icon file naming, it should be easy to make a system that calculates per-app bandwidth usage and shows the icon of the app and the name of the app without too much work. HTH :) Thomas _______________________________________________ SailfishOS.org Devel mailing list
